charge_controller_v7/battery.h

#ifndef BATTERY_H
#define BATTERY_H
#include <stdint.h>

//define macro to be used by multiple files in the program witout the variable being overwritten
//for testing
#define NUM_SLOTS (1)
#define BATTERY_THRESHOLD (50)

typedef enum{
    STATE_EMPTY= 0x01,
    STATE_BATTERY_DETECTED= 0x02,
    STATE_MEASUREMENT_IN_PROGRESS= 0x03,
    STATE_MEASUREMENT_DONE= 0x04,
    STATE_OVERCHARGING= 0x05
} BatteryState;

//Battery Structure

typedef struct{
    uint8_t slot_id;
    BatteryState state;
    uint16_t voltage;
    int16_t current;
    uint16_t temperature;
    uint16_t min_voltage;
    uint16_t max_voltage;
    uint16_t cut_off_current;
    uint16_t capacitance;
    uint16_t charge_fraction;
} Battery;

//global battery array declaration: extending visiblity of the variable to multiple source files
extern Battery batteries[NUM_SLOTS];

void Battery_Init();
void Battery_SafetyCheck(uint8_t slot);

#endif